One-off ExoDyne electric motorcycle

Full-time vet and part-time engineer Alan Cross has created an otherworldly one-off skeletal electric motorcycle called the ExoDyne.

The bike took nine months of research, design, and fabrication work to complete, and he did it all by himself – except for the seat upholstery and powdercoating.

The ExoDyne is based around a hand-built centre box frame, which holds 48 lithium polymer battery cells arranged in a 100V 32 Ah configuration – which is capable of a 600 A output but has been restricted to 200 A. Lithium-ion polymer batteries typically provide higher energy outputs than other lithium batteries, while being much lighter.

Power comes from an 11 kW (30 kW peak) motor from EnerTrac, using a Sevcon Gen 4 motor controller, helping the ExoDyne reach a top speed of around 60mph, with a limited range of 20 miles, in its current configuration. It weighs 112kg and the motorcycle parts were sourced from a 2005 Suzuki RMZ250 off-roader.